Multi-scale Computational Model of Underwater Explosion Shock Wave-Bubble Based on SPH and Its Application

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The study aims to develop a multiscale computational model to accurately simulate underwater explosions and their effects on shock waves and bubbles.
Utilized a novel Riemann SPH method combined with JWL-Ideal Gas equations for improved simulations.
Conducted experiments in free fields and free surfaces to validate the computational model.
Analyzed pressure evolution across micro to millisecond scales.
Achieved a significant accuracy improvement, with shock wave and bubble pulse pressure peak errors of only 5.29% and -13.10%.
Validated maximum bubble radius and period correlating with experimental results, with a maximum relative error below 3%.
Revealed mechanisms for bubble jet formation and internal thermodynamic evolution.

Develops a model for underwater explosion shock wave effects on bubbles, suggesting improved accuracy in assessments.

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Li et al. (2026) studied this question.

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